Tension device for winding-machines.



J. F. BENOIT.

TENSION DEVICE FOR WINDING MACHINES, APPLICATION FILED NOV. 13. 1914.

1158 432, Patent edN0v.2,1915

F4 0 0 Fig.1.

8 V I0 {l2 0/ 0 0 0 3 i 7 4 27 23 g & 7 2e lnverflor Joseph F. Be'nefi JOSEPH F. BEJSTOITfOF SANFORD, MAINE.

TENSION DEVICE FOR WINDING-MACHINES.

To all whom it-may concern Be it known that I, JOSEPH F. Bnnorr, a citizen'of the United States, residing at Sanford, county of-Work, State ofMaine, have invented an Improvement in Tension 'Devices for Winding-Machines, of which the following descriptiomiii connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts. r y This invention relates to winding machines of that type which are adapted to wind yarn directly from a skein onto a bobbin and it has for its object to provide a' novel device of this'nature by whichthe yarn can bejwound evenly and with uniform f tension on the bobbin so as toproduce a bobbin of uniform hardness and one capableof being used in the shuttle of a loom.

- In order to give an understanding of my invention I have illustrated in the drawings a selected embodiment thereof which will now be described, after which the novel fea- 1 tures will be pointed out in the appended 25 claims.

Figure 1 is a' vertical sectional view through a winding machine embodying my invention; Fig. 2 isa front view of the com-- bined tension and take-up. I

I have shown at 1 the frame of a winding machine having spindles 2 to support bobbins3 on which the yarn is wound, said spindles being provided with the usual whirls a by which they are ro'ated. The yarn is laid on the bobbins .by means'of a yarn guide 5 of usual construction which has i 'a vertical traversing movement. The wind-.- ing machine herein shown is of that type having a cone-shaped member 6 in which the lower end of the bobbin is received and which is provided with a slot 7 through which the yarn 8 passes from the threadguide 5, a device of this construction being adapted to. wind the bobbin with the .socalled weft wind. The yarn to be wound is taken from a skein 9 which is supported by a swift comprising the two reels 10 and'll, the reel 10 being rotatably. mounted on the fixed pivot 12 carried by the framework 13, and the reel 11 being rotatably mounted on a counterweighted lever 14; pivoted at 15 to the frame, the counterweighted lever operating to hold the skein under tension.

I In winding yarn directly from a skein onto a bobbin difficulty is experienced in se- Specification of Letters Eatent. 1 Application filed Novembr'13, 1914, Serial 110,872,009.

Patent-ed Nov. 2, i915.

curing an even laying of the yarn on the bobbin and a bobbin of uniform density, for j the tension on the yarn as it is drawn from y the swift varies very considerably, and as a result portions of the bobbin will be wound with a small tension and other portions with a greater. tension, thus making a bobbin with hard and soft spots therein. As a result, it s the common practice in textile mills to first wind the yarn from a skein onto spools and then to wind from the spool onto the bobbin which is to be used in the shuttle, it being considered that this double operatlon is necessary in order to get a bObblIl Of uniform density.

I have provided herein a combined tension and take up device which ,is adapted to i be applied to any winding machine, and by means of which an even tension can be given to the yarn 8 so'that a bobbin of-uniform density will be produced suitable for use in the shuttle of a loom. By means of my invention it is possible, therefore, to eliminate entirely one winding operation, for a properly-wound shuttle bobbin can be secured directly from the skein without the necessity of first winding from the skein onto a spool and then from the spool onto a bobbin.

My novel combined tension and take-up device comprises a roll 16 having a roughened yarn-receiving portion 17 about which the yarn 8 is passed and which is pivotally mounted 'on a lever 18 pivoted at 19 to a bracket 26 secured to the frame 1.

l the spring tending to apply the necessary frictional'pressure between the band 21 and the drum 20. The lever 18 is acted upon by a spring 24 which is connected at one end to the lower end of the lever, as at 25, and at the other end is connected to the bracket 26, the spring tending to throw the upper end of the lever carrying the pulley 16 outwardly thereby to take up slack in the yarn.

This. roll 16 1s acted upon by a friction device The frictional surface 17 on the roll 16 may be provided for in various ways. One simple way is to cover ment thereof with the roll 16 will rotate the V latter and the friction strap 21 acting on the drum 20 will apply to the yarn the necessary tension so as -to enable it to be laid com-v lpactly. The combined action 'of the, s wing-' 7 ing arm 18 and the friction strap 21 serves to produce aneven tension on the yarn so.

that a solid homogeneous bobbin can be wound even though the yarn is taken directly from the skein. Provision is also made for varying the frictional pressure. of the friction strap 21 on the drum 20, and for this purpose I have herein shown the arm- 18 as provided with a plurality of'lugs 27 to anyone of which the spring 23 may be attached. The tension on the spring 23 and hence the pressure of the strap against the drum depends on the point at which the spring 23 is fastened to the arm 18. Iihavealso providedthe bracket'26 with a plurality of lugs 28 to anyone of which the spring 24 maybe secured so as to-vary the pressure of the arm 18 against the yarn.

have demonstrated from actual practice that with a device of'this nature it is possible to wind a shuttle bobbin compactly so as to have a uniform density.

While I have illustrated a selected em bodiment of my invention I do not wish'to be limited to the constructional features shown.

I claim:

1. In a winding machine, the combinationv with a swift for supporting a skein of yarn,

a bobbin, andimeans today the yarn on the bobbin, of a combined tension and take-up device between the swift and the bobbin and comprising a pivotally-mounted springpressed arm, a -;roll rotatably mounted on the arm and having a roughened frictional surface about which the yarn is passed, a frictional drum rigid with the roll, a friction strap encircling the drum, and a spring connected tothearm and the strap for yieldingly holding the strap against the drum.

2. In a winding machine, the combination with a swift for supporting a skein of yarn, a bobbin, and means to lay the yarn on the bobbin, of acombined tension and take-up device between the swift and the bobbin and comprising a pivotally-mounted springpressed arm, a roll rotatably mounted on the arm and having a roughened frictional surface aboutwhich the yarn is passed, a frictional drum rigid with the roll, a friction estrap encircling the drum, a spring connected to the arm and the strap for yieldingly holding thestrap against the drum, and means for adjusting the tension of the spring. r

3. In a winding machine, the combination with a swift forsupporting a skein of yarn, a bobbin and' means to lay the yarn on..the bobbin, of a'combined tension and take-up device adapted to act on the yarn between the swift and the bobbin and comprising a pivotally-mounted spring-pressed compensating arm, a roll rotatably mounted on the arm and having a roughened surface about which the yarn isflwound, and means fric- JOSEPH F. snnorr. Witnesses:

GEO. A. FIELD, S. O. NIoHOLLs. 

